1. Ubuntu Security Notices
  2. USN-2104-1

USN-2104-1: LXC vulnerability

Publication date

12 February 2014

Overview

LXC would allow unintended access to the host, bypassing intended confinement.

Releases

Packages

  • lxc - Linux Containers userspace tools

Details

Florian Sagar discovered that the LXC sshd template set incorrect mount
permissions. An attacker could possibly use this flaw to cause privilege
escalation on the host.

Florian Sagar discovered that the LXC sshd template set incorrect mount
permissions. An attacker could possibly use this flaw to cause privilege
escalation on the host.

Update instructions

After a standard system update you need to recreate LXC containers created with the sshd template to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
13.10 saucy lxc-templates –  1.0.0~alpha1-0ubuntu14.1

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References

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